- Map reduce - spread processing of data over many computers so data can be processed in parallel with cheaper hardware. No transactions or schema. Aimed more at analysis (Reads) rather than full CRUD?
- Relational databases not good for unstructured free text
- Hadoop - open source, consists of (1) distributed file system to spread out data (HDFS), (2) way to push code down to do data analysis on the data
- Scalable because can just drop in more servers
- Memcached - in memory cache of relational database, push through writes "incrementally"?
- NoSQL - distributed hash tables
- Sharding (not discussed in video) - taking rows of a relational table and distributing across computers
Monday, January 21, 2013
Notes on "What is Hadoop? Other big data terms like MapReduce? Cloudera's CEO talks" video
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